var arr = [
    {
        name:1,
        ord_weight_score:3300
    },
    {
        name:4,
        ord_weight_score:3000
    },
    {
        name:2,
        ord_weight_score:3200
    },
    {
        name:3,
        ord_weight_score:3100
    },
]
arr.sort(function(a,b){
    return b.ord_weight_score - a.ord_weight_score
})
console.log(arr);